CVE-2026-83635

🗓️ 13 Oct 2026 18:59:46Reported by microsoftType

Out-of-bounds read in DNS Server allows an unauthorized attacker to deny service over a network.

Reporter	Title	Published	Views	Family All 7
Circl	CVE-2026-83635	14 Oct 202602:12	–	circl
Cvelist	CVE-2026-83635 Role: DNS Server Denial of Service Vulnerability	13 Oct 202618:59	–	cvelist
EUVD	EUVD-2026-99307	13 Oct 202618:59	–	euvd
Microsoft CVE	Role: DNS Server Denial of Service Vulnerability	13 Oct 202614:00	–	mscve
NVD	CVE-2026-83635	13 Oct 202619:20	–	nvd
Positive Technologies	PT-2026-112446	13 Oct 202600:00	–	ptsecurity
Vulnrichment	CVE-2026-83635 Role: DNS Server Denial of Service Vulnerability	13 Oct 202618:59	–	vulnrichment

Vulners

CNA

Node

microsoft windows_server_2008Range6.2.9200.0–6.2.9200.26434x64

Node

microsoft windows_server_2008Range6.2.9200.0–6.2.9200.26434server_core_installationx64

Node

microsoft windows_server_2008Range6.3.9600.0–6.3.9600.23470x64

Node

microsoft windows_server_2008Range6.3.9600.0–6.3.9600.23470server_core_installationx64

Node

microsoft windows_server_2008Range10.0.14393.0–10.0.14393.9612x64

Node

microsoft windows_server_2008Range10.0.14393.0–10.0.14393.9612server_core_installationx64

Node

microsoft windows_server_2008Range10.0.17763.0–10.0.17763.9376x64

Node

microsoft windows_server_2008Range10.0.17763.0–10.0.17763.9376server_core_installationx64

Node

microsoft windows_server_2008Range10.0.20348.0–10.0.20348.5761x64

Node

microsoft windows_server_2008Range10.0.26100.0–10.0.26100.33650x64

Node

microsoft windows_server_2008Range10.0.26100.0–10.0.26100.33650server_core_installationx64

[
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.2.9200.0",
        "lessThan": "6.2.9200.26434",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.2.9200.0",
        "lessThan": "6.2.9200.26434",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012 R2",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.3.9600.0",
        "lessThan": "6.3.9600.23470",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2012 R2 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "6.3.9600.0",
        "lessThan": "6.3.9600.23470",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2016",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.9612",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2016 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.14393.0",
        "lessThan": "10.0.14393.9612",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2019",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.9376",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2019 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.17763.0",
        "lessThan": "10.0.17763.9376",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2022",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.20348.0",
        "lessThan": "10.0.20348.5761",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2025",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.26100.0",
        "lessThan": "10.0.26100.33650",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Windows Server 2025 (Server Core installation)",
    "platforms": [
      "x64-based Systems"
    ],
    "versions": [
      {
        "version": "10.0.26100.0",
        "lessThan": "10.0.26100.33650",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]

Source	Link
msrc	www.msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83635

13 Oct 2026 22:15Current

5.8Medium risk

Vulners AI Score5.8

CVSS 3.17.5

SSVC

CWE-125